Potassium Bromide (KBr) Optical Crystal, <100>, Double-side polish, 10 x 10 mmProduct Type: Infrared optical crystal
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For model selection, technical specification confirmation or configuration support, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This crystal is water-soluble and moisture-sensitive, requiring storage in a dry environment. Chemical polishing is not recommended due to potential surface degradation.
- Moisture Sensitivity: Store the crystal in a desiccated environment to prevent dissolution or surface fogging.
- Chemical Polishing Restriction: Do not apply chemical polishing methods as they may damage the crystal surface.
- Orientation Tolerance: Confirm the <100> orientation within ±0.5–2° tolerance before use.
- Surface Quality Requirement: Inspect for surface defects meeting S/D 80/50 and roughness ≤30 nm prior to deployment.
- Packaging Integrity: Maintain the crystal in a Class 100 clean bag and handle only in a Class 1000 or cleaner environment.
What is the maximum usable thickness for this KBr crystal as a thin-film substrate given its water solubility and surface roughness specification?
The thickness is customizable from 0.5 mm to 5 mm, with a surface roughness of ≤ 30 nm and surface quality S/D 80/50. Because KBr is water-soluble and moisture-sensitive, chemical polishing is not recommended, so the practical upper thickness limit for film-substrate separation workflows depends on mechanical handling constraints rather than optical absorption, as the transmission range extends to 27.5 μm.
Can this <100>-oriented KBr crystal be used directly in a vacuum infrared spectroscopy chamber without additional anti-reflection coating?
Yes, the double-side polished 10 x 10 mm format with 91% transmission across 0.2–27.5 μm and a refractive index of 1.49 is suitable for uncoated use in vacuum IR spectroscopy. However, the crystal is moisture sensitive and packaged in a Class 100 clean bag under Class 1000 or cleaner-room conditions, so it must be transferred to the vacuum chamber without exposure to ambient humidity to prevent surface degradation.
What are the orientation tolerance and lattice constant constraints for aligning this KBr crystal in a mid-infrared laser window application?
The <100> orientation tolerance is ±0.5–2°, and the cubic lattice constant is a = 6.291 Å. For laser window use at mid-IR wavelengths up to 27.5 μm, the orientation tolerance ensures minimal birefringence, but the crystal's melting point of 770 °C and density of 1.98 g/cm³ impose thermal management limits; water solubility also precludes any aqueous cooling or cleaning methods.
This KBr optical crystal, with <100> orientation, double-side polish, and 10×10 mm format, offers broad UV-to-mid-IR transmission (0.2–27.5 μm) and 91% transmission, making it suitable for infrared spectroscopy and thin-film substrate applications, but requires careful handling due to its water solubility and moisture sensitivity.
Positive
- Broad UV-to-Mid-IR Transmission: Transmits from 0.2 to 27.5 μm, covering ultraviolet to mid-infrared, enabling versatile use in spectroscopy and optical components.
- Water-Soluble Substrate Capability: Acts as a water-soluble substrate for film-substrate separation workflows, simplifying thin-film transfer processes.
Trade-offs
- Moisture Sensitivity: Water-soluble crystal is highly moisture sensitive; requires storage in dry environments and careful handling to avoid surface degradation.
- Polishing Constraint: Chemical polishing is not recommended; only mechanical polishing methods are suitable, limiting surface finishing options.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
